Invention Grant
US09279549B2 Light-emitting module with wavelength converters and light-absorbing substance 有权
具有波长转换器和吸光材料的发光模块

Light-emitting module with wavelength converters and light-absorbing substance
Abstract:
A light-emitting module includes a light-emitting element, a first wavelength converter and a second wavelength converter. The first wavelength converter is located in an optical pathway of emitted light, and converts a portion of the emitted light to light in a first visible wavelength band. The second wavelength converter is located in the optical pathway on an opposite side of the first wavelength converter relative to the light-emitting element, and converts at least a portion of light passing unconverted through the first wavelength converter to light in a second visible wavelength band, differing from the first visible wavelength band. The light-emitting module also includes a light-absorbing substance, absorbing light in at least a wavelength band from 570 nm to 590 nm, which is present in the optical pathway between the light-emitting element and the second wavelength converter, the second wavelength converter not containing the light-absorbing substance.
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